Typewriting machine



-Oct. 14, 1941. H. 1.. PITMAN TYPEWRITING MACHINE 3 Sheets-Sheet l Filed March 27, 1939 ATTO R N EY INVENTOR HEN/7V L. P/TMA/V a illl l lllll 0Ct. 14, 1941. H P|TMAN I 2,258,715

TYPEWRITING MACHINE Filed Margh 2'7, 1959 3 Sheets-Sheet 2 INVENTOR HENRY L. P/TMAN I ATTORNEY Oct..14, 1941. P|TMAN v 2,258,715

TYPEWRITING MACHINE Filed March 27, 1939 5 Sheets-Sheet s INVENTOR HE/VA) L. P/T/V/l/V ATTORNEY Figure 8 is a perspective of two intermediate stops combined for joint adjustment.

Figures 9, 10 and 11 are side view diagrams showing the relative positions of the parts consequent to operation of the different carriage re- 7 turn keys.

In a typewriter such as the Standard Underwood, a carriage l5 moves laterally on front and rear tracks l6, 11 supported on the machine frame partly shown at 3, Figure 2.

A spring motor l9 urges the carriage leftward in letter feed steps under the control of escapement dogs 29 cooperative with an escapement wheel 21 having a pinion 22 meshing with'a letter feed rack 23 on the carriage.

Type bars 24 are actuatable by means of type keys 19 to print on a work sheet backed by a revoluble platen 25 in the carriage I5. A universal bar 26 cooperates with the type bars 24 to actuate the escapement dogs 2!].

Mechanism for driving the carriage in return direction by power includes a drive shaft 21 which is suitably journaled in the framework of the machine and which may be rotated continuously by means of a motor, not shown, durion comprises rock shafts 36, 31 suitably jour naled in the framework, the rock shaft 36 having an arm 38 pivotally supporting the rear end of the link at 39. Said rock shaft 36 has an arm and link connection 46 to the rock shaft 31 which has a shifter arm 41 engaging a groove' of the pinion 36 as at 42, Figure 2.

Upon its being shifted rearwardly and thus clutched to the power operated drive shaft 21, the pinion 36 rotates with the latter in the direction of the arrow, Figure 2, and thereby moves the rack 29 rightwardly for returning the carriage. Said rightwardly driven rack 29 initially has limited endwise movement relatively to the carriage before it returns the latter. This initial independent movement of the rack is utilized to line space the platen by means comprisinga rack 43 on the rack 29 working through gearing 44 to turn a line spacing shaft 45 journaled in the carriage and forming part of line spacing mechanism of the kind exemplified in the Patent No. 1,835,776 to W. F. Helmond.

In a final part of its power driven return movement to a predetermined position, the carriage l5 displaces a rod 46 slightly endwise to the right of the machine by engaging a carriage return limiting stop connected to said rod as will hereinafter appear. This endwise movement of said rod 46 is transmitted to the pinion 36 to shift the latter forwardly to unclutch it from the power driven shaft 21. The movement transmitting connections comprise a bracket 41 fastened to said rod 46 and connected by a link 48 to an arm 49 of a rock shaft 56, Figure 1, journaled in the framework of the machine. Said rock shaft 50 has an arm and link connection 5| to the rock shaft 36 of the hereinbefore described carriage-return pinion-shifting train. The rod 46 is slidably supported as at 53, Figure 3, in left and right standards 54 spread laterally from the side wall members 55 of the machine frame. A shaft 56 which is rockable, as will hereinafter appear, is journaled in said standards 54. The usual rack 51 of the Underwood machine for laterally positioning a usual line-end margin stop 58, Figure 6, has end arms 59, Figure 2, supported by but freely rotatable about the shaft for rendering said rack depressible for a purpose which will be referred to later.

The unclutching of the pinion 30 by means of endwise movement by the carriage of a rod such as 46 is shown in my co-pending application Serial No. 57,205, filed January 2, 1936, now Patent No. 2,164,422, dated July 4, 1939. The present application discloses features of improvement over said co-pending application in respect to gaging the return of the carriage to different positions.

H The typewriter features and power drive for returning the carriage as so far described are substantially in the prior art as exemplified in the Pitman Patent No. 1,679,741 of August 7,

I will now describe the organization whereby return of the carriage as by means of the described power drive is selectively gageable to different return or line-start positions at the will of the typist.

There are, for example, three difierent stations to which the carriage I5 is to be returnable selectively. There isan extreme station in that, of the three stations, it is farthest to the right of the machine, and there are a right intermediate station and a left intermediate station.

Correspondingly, there are three stop devices generally designated, Figures 6 and 7, as ES, RIS and LIS. Figure '1 represents an extension of Figure 6 to the right and hence it will be understood that in the machine the stop devices ES and RIS of Figure 7 are to the right of the stop device LIS of Figure 6.

. Each stop device is similar to the carriage return margin stop used in the Underwood typewriter in that it includes a body 60 supported by and slidable along the rod 45 and the shaft 56 and also includes a holding dog 6| pivoted to the body 60 and spring pressedto interlock as at 62 with letter spaced teeth 63 on the rod 46 which thus serves as a stop stationingrack. Each dog 6| has a finger piece 64 by which it is manipulated to retract it from the teeth of the rod 46 preparatory to shifting the stop device laterally to change its carriage return limiting station. The teeth 63 and dog 6| are of ratchet form adapted to lock the stop device positively against rightward displacement by the carriage from its station on the rod 46. Each stop device also includes a pointer 65 cooperative with a letter space scale 61.

For engaging said stop devices, the carriage has secured to its frame acounter-stop 68. The extreme stop device ES has a stop block 69 which preferably is fixed so as to be constantly in the path'of the carriage carried counter-stop fill-as indicated by the dotted line showing of. the latter in Figure 7. The intermediate stop devices 'RIS and LIS include, respectively, stops R and L inthe form of arms extending from the rock shaft 55. Each stop arm R and L is slidable along the shaft 56 and has a key I9 and a keyretainin'g screw II, the key 19 slidably fitting a spline groove I2, Figure 2, in the shaft 56 so that rock: ing of the latter rocks the stop arms R and Lgas will later appear, into and out of the path of the carriage carried counter-stop 68. Each in.- termediate stop device body 60 has a stopearm retaining clip 14 so that each stop arm R or L is carried along with the lateral shift of its companion body 69 to one or another station.

Associated with the intermediate stop devices R15 and LIS are corresponding carriage return keys RI and LI. The extreme stop devices ES may also have an associate key CR. These three keys are mounted respectively on corresponding key-levers 16, I1 and'lil and are preferably di e posed at the left of the usual typewriter key board comprising the type keys 79.

The carriage return keys are selectively depressible to rock their key levers counter-'clock-" wise of Figure 2 about a common fulcrum stud 8|] in the framework of the machine. Each of, said key levers has an upright arm terminatingin a cam end 8|. The several cam ends 8-I normally stand, side by side, behind a broad pawl nose 82 of a piece 83 pivoted to the link 35-at 84. Said piece 83 has its center of gravity well behind the pivot 34 so that it tends to turn clockwise of Figure 2 but is normally positioned against a stop 85 in the link 35.

A lever 81 pivoted to the framework I8'at 85 is urged clockwise of Figure 4 by a spring 89 and has a lateral spur 98 normally stopping it against said framework as at 9], in such position that a latch spur 92 of said lever 81 engages a shoulder 93 of the link 35 to latch the latter inyi-ts normal or forward position, Figure 2. A spring 94 pulls downwardly and rearwardly upon the link 35. Downward movement of the link about its pivot 39 is limited to its normal position, Figure 2, by a vertically adjustable stop 95 on a plate 95 secured to the framework and having a lateral-guide slot 9'! for said link 35. f

The stop arms R and L have, respectively, counter-stop engaging portions 99 and I that are angularly spaced from one another about the axis of the shaft 56. Both stop portions 99 and It!) are normally below the path of the counter-stop 68 as in Figure 2 and are movable selectively into said path by turning the shaft 56 through different angles counter--clockwise of. Figure 2.

"The shaft 58 is turnable through said different angles by means of the intermediate car riage return keys RI, LI and their respective levers 76, TI. Fulcrumed 0n the carriage return lever stud 8B is a lever I93 having an arm pr-e senting a transverse pin Hi4 engageable by either lever 75, TI as at Figures 2 and 6. A lift arm if of said lever 193 has a pin-andrslot connection I01 to a link I98 pivotally connected to anarm ill-9 fast on a short rock shaft "I I9 journaled at its opposite ends in the left frame standard 59 and in a bracket II I attached to the frame, Eigures 2, 3 and 6. An arm H2 fast on said rock shaft -I I is connected by a draw spring. l iZ-iand a link H4 to an arm H5 fast on the stop arm carrying rock shaft 55. Said link I I4 and arm H2 have a pin-and-s'lot connection 1 IB' which" with the draw spring H3 serves as a one-way yieldable connection whereby counter-clockwise rocking of vthe shaft H0 rocks the shaft 56 to place the stop arm R. or L into the path of the counter-stop 68. This connection is yieldable so that depression of the carriage return key LI and its key lever TI is not impeded should the stop arm R at that time happen to be directly under the counter-stop 58..

I .The different angular movements of the shaft 56 may be gaged by gaging the angular movement of the lever 75 differently from that of the lever Tit-hereby to efiect different angular movements of the lever I03 and correspondingly different lifts0f "the link I68. To gage its angular movement, the lever 15 has an adjustable stop screw I I8 for striking a stop plate l'I-9 attached to the framework. To gage its angular movement, the'lever I7 has a stop nose I20 to strike said stop plate 1 ii]. To limit its stroke, the extremecarri-age return lever 78 has a stop nose IZI for striking said stop plate I I9.

In order that the typist need not keep the key R1 or LI depressed to maintain the shaft 56 and its stop arms R and L at thegaged position, said position is maintained automatically by a detent device in the form of a latch lever I22, pivoted at i223 tothe lift link N8, and a latch spur 124 attached to the framework .as will later be described. The latch lever I 22 has two latching steps I25, I normally below said spur 124 as in Figure 2;

Upon depressing the right intermediate .keyRI, the link Hi6 will he lifted just far enough for engaging the upper step I25 of the latch lever with the spur I211 as in Figure .9} Inthat case, stop portion 99 of the stop arm R will be placed in the path of thecounter-stop 6'8, but the stop portion I99 of the stop arm L willstili be below said path and therefore ineffective.

Upon depressing the left intermediate key LI, the link H38 Will be lifted farther, that is, for engaging the lower step I26 of the latch lever I22 with the'spur 1 2d as in Figure 10. that case,

the stop portion Hill of the stop arm L will be placedfin the path of the counter-stop "68. At the same time the stop arm R will also be in said path but this is of no moment since said stop arm. R is tothe right of the stop arm L and the 5&0 latter is effective because it is usually to the right of thecounter-stop 58 when the left intermediate key L1 is depressed.

The extreme carriage return key CR and its lever 18 have no operative connection to the lever 1 I93 and, therefore, at depression of said carriage return key CR, the shaft is not rocked and. hence the stops R. and L remain below the path of'the counter-stop 58 as in Figure 11.

Each of the key levers 'I6- 'l8 has a stop spur I28 against the rear edged the stop plate H9, as in Figure 2, to determine the normal positions of said keylevers in which the latter may be yieldably maintained by individual pull springs 29 anchored to the framework. A spring 130,

Figure 2, anchored to the framework, pulls the link H38 downwardly to maintain the latter and its connected parts, including the stop arm shaft '55, and the lever N3 in normal positions, Figure 2, which may be determined by abutment of the transverse pin 1134 of said lever i193 with either or both of the stopped levers it, H as in Figure 6. The stop spurs 42 8 are bendable edgewise for adjusting the normal positions .of the lovers 1-5.-I8. Beading of said spurs I2B..1's facilitated by pro-J viding stiff :companionspurs 1'32 and intermediate slots I33 on the levers 16-18 for the application of bending tools.

Upon rocking any one of the key levers 16-18 counter-clockwise of Figure 2 by depressing the corresponding key, the corresponding cam end moves forwardly and engages the pawl nose '82 of the piece 83 on the link 35 thereby lifting the latter about the pivot 39 to release its shoulder 93 from the latch spur 92 of the latch lever 81 which is stopped against clockwise rotation at 9|. The resulting rearward movement of said link 35 by its spring 94 works as hereinbefore described to shift the carriage return pinion rearwardly to clutch it to the drive shaft 21. De-- pending on which key is depressed, the stop device ES, RIS or LIS will be effective to intercept the carriage-carried counter-stop 68.

By its rearward movement, the link withdraws a stop I 35 thereon rearwardly from its Figure 2 engagement with the latch lever I22 so that the latter urged counter-clockwise of Figure 2 by a spring I36 anchored to the link I08 will engage one of its steps I25, I26 with the latch spur I 24, provided either the key RI of LI was depressed to lift said latch lever I22 along with the link I08. If the key OR was depressed, the latch lever I22 is not lifted and hence merely settles against the front of the latch spur I24 with the steps I25, I26 remaining below said spur as in Figure 11.

Upon carriage return limiting engagement of the carriage-carried counter-stop 68 with the effective stop device ES, RIS or LIS, the effective stop device is displaced rightwardly along with the rod 46 so that the latter, by means of the train, Figure 1, rocks the shaft 36 clockwise of Figure 2 to shift the carriage return pinion 30 forwardly from clutching engagement with the drive shaft 21. It will be obvious that said clockwise rocking of the shaft 36 also moves the link 35 forwardly again to cause it automatically to become latched in normal position again by the latch spur 92.

In the forward restoration of the link 35, its stop I35 turns the latch lever I22 clockwise from the Figure 9 or 10 position to release said latch lever from the spur I 24. This occurs if it was the key RI or LI that was depressed to render the stop arm R or L effective and it results that there is automatic restoration of the stop arms the escapement devices 20, 2|, 22, and under the.

urge of the letter-feeding carriage spring motor I9, the carriage has the usual drop-back move-.

ment of approximately a letter space as it becomes disengaged from the carriage return drive shaft 21 by the described rightward movement of the rod 46. This carriage drop-back movement is slightly more than sufficient to enable: the spring I38 to return the rod 46 leftwardly to normal position in which a stop collar I40 on said rod 46 strikes theleft frame standard 54.

The link 48 of the carriage-return-pinion-unclutching train, Figure 1, has a pin-and-slot connection I4I which, at the carriage drop back, permits the rod 46 to return leftwardly without displacing said train and hence without causing reclutching of the carriage-return pinion 30 with the drive shaft 21.

Figure 8 represents a modification in which right and left intermediate stop arms R. and L are permanently spaced laterally apart at a fixed distance and are adjustable laterally as a unit along with a companion body 60'. In this construction a spacing block I 42 separates said arms R and L' which, with said block I42 are secured by screws I44 to a broad key plate I43 slidably fitting the spline groove 12 of the shaft 56. A clip 14" engages the stop arm R to connect thelatter, and hence the stop arm L, with the body 60 for lateral shifts as a unit.

Figure 8 also illustrates a modification of an extreme margin stop device ES having a stop lug I45 positioned to intercept a counter-stop forming tab I46 of a lever I41 pivoted to the carriage frame at I48 sothat by rocking said lever clock wise of Figure 8 said tab I46 may be raised clear of said stop lug I45 to permit the carriage to be returned rightwardly beyond said stop device ES. This latter rightward movement may be limited by said counter-stop tab I46 striking the stop collar I39 on the rod 46. The counter-stop 68 is provided to engage the stop arms R and L.

Each of the margin stop bodies 60 or 60 may have a hub sleeve I49 which extends the bearing of the body along the shaft 56.

The latch spur I24 for the latch lever I22 may be a laterally bent tab of a piece I5I, Figure 5, pivoted at I52 to a bracket I53 secured to the machine frame I8. Said piece I5I may be turnable about the pivot I52 to adjust the latch spur I24 vertically to thereby adjust the elevation at which the latchlever I22 cooperates to maintain the stop arms R and L.

The lift and consequent release of the link 35 from the spur 92 by operation of the intermediate key lever 16 or 11 are timed to occur in correspondence with the lift at the steps I25, I26 of the latch I22, so said steps will be ready to engage the latch spur I24 'irmnedia tely upon rearward movement of said link 35. Thus, at rearward movement of the link 35 consequent to operation of the right intermediate key lever 16, the step I25 will have been lifted far enough to be ready to engage said spur I24, and, consequently to operation of the left intermediate key lever 11, the step I26 will have been lifted far enough to engage said spur I24.

The stop I35, on the link 35, controlling the latch lever I22, may be a laterally bent tab of an arm I54 having a screw-and-slot attachment I55, Figure 2, to said link 35 to permit forward or rearward adjustment of said stop on said link.

The line-end margin stop 58 has pivoted thereto at I56 the usual cam lever I51 engageable, as the carriage in its leftward travel reaches an extreme line-end position, by the counter-stop 68 to be thereby rocked clockwise of Figure 6 to depress the rack 51. Said margin stop 58 has a U-shaped clip I58 slidably embracing the rod 46 to keep said margin stop from turning about the shaft 56. Saidmargin stop 58 is adjustable laterally to different stations and is releasably maintained at any station by means of its spring pressed dog I59 releasably interlocked with the rack 51.

The rack 51 has pivotally connected thereto at I60 at thrust link I6l having a pin-and-slot eate -sis connection I62 to the latch lever 81. With-the spring 39' maintainingthe latch lever 81 stopped at 9! 'in normal position, the rack 51 is also maintained in normal position preparatory to its depression by engagement of the carriage with the cam lever I51. 'Such depression'of the rack 51 rocks the latch lever 81 counter-clockwise of Figure 4 thereby depressing the latch spur 92 to release the link 35 for consequent carriagereturn-initiating rearward movement thereof by the spring 94.

At such rearward movement of the link 35,

an inclined cam shoulder I63 thereof rides over the fixed stop 95 thereby lifting the forward end of. said link and hence cooperating to lift its pawl nose 82 well over the key lever cam ends 8|. This lifting of the forward end of the link 35 may serve through a connection from said link partly shown at I 64, Figure 2,v to actuate a lock mechanism, not shown, interlocking the type keys 19 with said link. If said interlocking mechanism happens to be effective at a line-end position and hence prevents immediate lifting of the link 35, there is, nevertheless, no opposition to depression of the latch spur 92 by the carriage if the latter at that time should happen to be tabulated and hence moved forcefully to the extreme line-end position. It Will be seen, therefore, that provision of the lever 81 as the medium operable by the carriage for releasing the link 35 avoids liability of straining the parts in the contingency just described,

The intermediate carriage return keys RI and LI may be disposed relatively to one another substantially as shown in Figures 2 and 6 so as to be selectably operable by the heel of the palm of the typists hand, thus leaving the fingers of that hand free to operate the type keys. This method conduces to the typists speed and convenience in manipulating the keyboard of the machine including said intermediate carriage re.- turn keys.

Any one of the three carriage return keys may e released, immediately following its depression, for immediate restoration of the companion key lever to normal position by its spring H9. This immediate restoration of the key lever does not interfere with subsequent automatic forward restoration of the link 35 by means of thecarriage inasmuch as the pawl piece 83 of said. link 35 may turn counter-clockwise, Figure 2, about its pivot to by-pass the cam end 8| of the restored carriage return key lever. Similarly, if one of the carriage return key levers Iii-J8 happens to be kept depressed by the typists hand or finger so that it is not released and restored until after or during the automatic forward .re-

turn of the link 35, the pawl piece 83 will yield by turning cotmter-clockwise about its pivot to permit the delayed restoration of the key lover or to permit its restoration concomitantly with the automatic forward restoration of the link 35. Since the link 35 is thus restorable independently of the key levers 56-78, the action of said link 35 to trip the latch lever I22 for determining restoration of the stop arms'R and Ir-is also independent of said key levers. a

The intermediate carriage return key R1 or LI may be operated before the carriage reaches the extreme line-end position defined "by the line end margin stop 58. For example, the carriage may reach said extreme line-end position atonly one of a. group of lines on a bookkeeping work sheet and be returned automatically to extreme line-start position at the stop device'ES.

asss i e l nes .o the t e my end short or said extreme line-end-position. From said short'line-end-position the carriage is to be returnable to one or the other intermediate linestart Y positions, as, for example, Ql ostin tr s n d b and di column of; said b09141 kesp leeshe t v l t wil be seen, n that th n ntion. pro.- id s me n readily and. conveniently opera le by the ypist fo return n t e car ia e at will o in e mediate li -st rt os tions. Fur her, a d intermediate line-s ar positions b riably de erm n d independent y o one nother ina much as t e nte media e stop de i s 'R'IS. and are a erally adjus a le nd n ently of one ano her and, m reove are. ach a Jjust ble independently f the extre e ne start stop device the latter lso being adjus able independently to varia ly d ermine the em line-start position of, the carriage. In the Fig: ure' dmodiiicati'on, th t rm diate stop d v se combining the s o sma t and L as. a n t is adjustable independently of the extreme stop device E 1t w ll furt er be seen that the, inv ntion is eadilyapnlicable t ex ing fo ms of ma h ne as th S andard Und rwood typewriter. or exa ple. with mod ra e chan es n. the exi tin stru ure or su h ma hi Va iat ons ma be sorted o within t e scope of he in ent on a d p tion f th im ro eme its-may be used without oth rs.

What s la med is:

a typing machine; a frame, a carriage movable thereon in advance and return diree, dons, a support on said f m x ding adiacentthe ca ia pa h an sk le b t a ax parall ing said pat a stop on sa d Su port and a .eounterrstop therefor on said carriage for lirntine the c r ag re urn mo n m a s snablingthe positioning of said stop selectively at different carriage return limiting stations on said support, a key andkey-operated connections for ockin said sup r f moving s d s ep a sversely of and into th p h of sa d c un e $1 9.9. did top being nonnally biased to move out pi'sa d path, power mec an sm respons ve to theorem-non of said k y s as to c me e e eed to drive sa d ca ria e n. e u n diree on. a detent automatically effective to maintain said sup or to k ep s st p n d pa and mea s responsive .to encounter .of said counter-stop with said sto and o con qu nt tera a em nt of said stop to disengage said power mechanism 1 and release said detent to thereby permit the stop tomove out of said path again, said su port being adapted to permit said lateral dis,- ele ement o sa d st p- ,2..I r-1 g, typing machine; a frame, a carriage mov ble ther on in dv n a d re u n ctions, a counterrstop on said carriage, a pluraL tyo a -ria r tur-n fim ms st ps mea s enaminehe ateral s ti ng of sa d stops i d vidually and separately to different carriage retur l m tin stations on sa am a sup o t orsaid steps movab d fierent ex ent or movingsaid stops selectively into the path of said l r-s e sa s ops b g normali a d erent d s a ces om a path a d ein ased to m ve-o t of sa d path, a plura ity .0? ,keys ca espond ng t sa steps a d m unted on said frame stationarily relatively to the lateral positionineo sa d ste s me ns ind vidua l enab ing V dah'ikeyzt more saidsupp rt t. e redu siteextent: to more the cor esp ndine stop int said path, irrespective of the stations of the stops, and power mechanism responsive to the operation of any key so as to become engaged to return the carriage to the corresponding stop.

3. In a typing machine, a frame, a carriage movable thereon in advance and return directions, a power mechanism actuatable for returning said carriage, and means for actuating said mechanism and gaging the consequent return of the carriage to different positions, said means including a plurality of keys, one for 'each of said positions, mounted on said frame for selective manual operation, means responsive to operation of any key to actuate said mechanism, a rockshaft journaled in said frame, a plurality of stop arms, corresponding to said keys, spaced along said shaft and also spaced angularly about the axis of said shaft, a counter-stop on said carriage, said stop arms being normally out of the path of said counter-stop, and connecting means between said shaft and keys enabling the lat--' ter to rock said shaft selectively through different angles to move said stop arms selectively into said path.

a. In a typing machine; a frame, a carriage movable thereon in advance and return directions, a power mechanism actuatable for returning said carriage, and meansfor actuating said mechanism and gaging th consequent return of the carriage to different positions, said means including a plurality of keys, one for each of said positions, mounted on said frame for selective manual operation, means responsive to operation of any key to actuate said mechanism, a rock shaft journaled in said frame, a plurality of stop arms corresponding to said keys, spaced along said shaft and also spaced angularly about the axis of said shaft, a counter-stop on said carriage, said stop arms being normally out of the path of said counter-stop, connecting means between said shaft and keys enabling the latter to rock said shaft selectively through different angles from a normal position to move said stop arms selectively into said path, detent means acting automatically to maintain said shaft in the position to which it is rocked by a key, and means responsive to the encounter of said counter-stop with a stop arm to stop the carriage returning actuation of said power mechanism and to restore said shaft to said normal position.

5.-In a typing machine; a frame, a carriage movable thereon in advanc and return directions', a counter-stop on said carriage, a plurality of carriage return limiting stops for engaging said counter-stop, means enabling the positioning'of each stop individually and separately at different stations adjacent the path of said counter-stop, a plurality of selectively operable keys corresponding to said stops, means normally maintaining said stops out of said path and operable differently by means of said keys to move said stops transversely of said path to place said stops selectively into said path, power mechanism responsive to operation of any key to become engaged to return the carriage to a position corresponding to the selected stop, a detent automatically effective to maintain the selected stop in said path and means responsive to encounter of said counter-stop and the selected stop to disengage said power operable mechanism and to release said detent to permit said selected stop to be moved out of said path again.

6. In a typing machine; a frame, a carriage movable thereon in advance and return direc- Lions a counter-stop on said carriage, a stop cooperative withsaid counter-stop for limiting the carriage return movement, a manuallyoperable key, means operable by said key for moving said stop transversely of and thus into the path of said counter-stop', said stop being normally biased to move out of said path, a power operable carriage return mechanism, a normally latched element releasable by operation of said key and displaceable from a normal position to cause said carriage return mechanism to become engaged to return said carriage, means tending tq so displace said element, said element being returnable to normal latched position to disengage said carriage return mechanism, a latch device automatically effective in response to displacement of said element to maintain said stop in said path, and means responsive to encounter of said counter-stop and stop to return said element to normal position and concomitantly disable said latch device.

7. In a typing machine; a carriage movable in advance and return directions, power operable mechanism engageable for returning the carriage, means for gaging the return of the carriage to an extreme position or to an intermediate position, saidmeans including an extreme stop device and an intermediate stop device, means enabling the positioning of said stop devices individually and separately to different carriage-return-limiting stations, said carriage having counter-stop means for engaging said stop devices, said extreme stop device being normally effective and the intermediate, stop device being normally ineffective, means operable to engage said carriage-return-mechanismfor returning said carriage to said extreme stop device, a manually operablekey, means operable at will by said key to engage said carriage return mechanism and concomitantly render the intermediate stop device eifective, a latch automatically effective to sustain efiectiveness of said intermediate stop device independently of manually sustained opera.- tion of said key, means to render said intermediate stop device ineffective again upon tripping said latch, and means responsive to encounter of said counter-stop means and either one of said stop devices to disengage said carriage-return mechanism, and trip said latch if said key has been operated to render the intermediate stop device effective.

.8. In a typing machine having a frame; a carriage movable in advance and return directions on said frame, a counter-stop on said carriage, a plurality of carriage return limiting stops on said frame and spaced apart in the direction of carriage return and also spaced at different distances from the path of said counter-stop, means enabling the stops to be spaced at variable distances apart in said direction, means including a plurality of selectively operable keys to move said stops jointly different distances. the distance depending on which key is operated to place said stops selectively in said path, and power operable carriage return mechanism responsive to operation of any one of said keys to become engaged to return the carriage to the selected stop.

9. In a typing machine having a frame; a carriage movable in advance and return directions on said frame, a counter-stop on said carriage, a plurality of carriage return limiting stops on said'frame and spaced apart in the direction of carriage returnand also spaced at different distances from the path of said counter-stop, means enabling the stops to be spaced at variable dis- I tances apartin said direction, means including,

a plurality of selectively operable keys to move said stops jointly different distances, the distanc depending on which key is operated, to place said stops selectively in said path, power operable carriage return mechanism responsive to operation of any one of said keys to become engaged to return the carriage to the selected stop, a latch device maintaining the stops automatically in their key placed position, and means responsive to encounter of the counter-stop and selected stop to disengage said carriage return mechanism and to trip said latch device.

10. In a typing machine; a frame, a carriage movable in advance and. return directions on said frame, a counter-stop on said carriage, a plurality of carriage return limiting stops individually and separately adjustable at will to different stations along the path of said counter-stop, said stops being, at any station, normally out of said path and at difierent distances from said path,

means including a plurality of keys operative, irrespective of the stations of the stops, to move said stops jointly difierent distances to place said stops selectively in said path, the distance depending on which key is operated, and power operated mechanism responsive to the operation of any key to become engaged to return said carriage to the selected stop.

11. In a typing machine; a frame, a carriage laterally movable on said frame, a counterstop on said carriage, a plurality of carriage-arresting stops, means including provisions for enabling said stops to be individually and separately adjusted at will to difierent stations along the path of said counterstop and for disposing said stops, at any station, normally out of and at different distances from said path, a plurality of keys operatively connected to said stops so as to be operable, irrespective of the stations of the stops, to move said stops jointly different distances to place said stops selectively in said path, the distance depending on which key is operated, and a power mechanism responsive to the operation of any key to move the carriage toward the corresponding stop.

12. In a typing machine; a frame, a carriage movable in advance and return directions on said frame, a counter-stop on said carriage, a stop normally out of the path of said counter-stop, means, including a rack, for placing said stop at different stations along said path, means, including a manually depressible key, for moving said stop into said path, said rack being displaceable endwise by the returning carriage upon encounter of said counter-stop and stop, a power operable mechanism responsive to said key to become engaged to return said carriage to said stop, a

latch to maintain said stop in said path independently of sustained manual depression of said key, and means responsive to the displacement of said rack to disengage said carriage return mechanism and to trip said latch.

13. In a typing machine; a frame, a carriage movable in advance and return directions on said frame, power operable carriage return mechanism, a member tending to move in one direction to an operated position to initiate a carriage returning actuation of said mechanism, a latch movable on said frame from a normal position in which it restrains said member, said member being displaceable transversely of said direction to release it from said latch, a key operable to so displace said member, and means enabling the carriage as it reaches a predetermined line-end position to move said latch to release said member independently of said key.

14. In a typing machine; a carriage movable in advance and return directions, a counter-stop on said carriage, a plurality of carriage return limiting stops jointly movable difierent distances from a normal position, in which said stops are out of the path of said counter-stop, to place said stops selectively in said path, means, including a plurality of selectively operable keys corresponding to said stops, to jointly move said stops said distances, the distance depending on the key which is operated, power operable carriage returning mechanism, spring-urged means releasable from a normally latched position by any one of said keys to actuate said power mechanism, and a latch device controlled by said spring-urged means to be efiective at release of the latter to maintain said stops in their key placed positions.

HENRY L. PITMAN. 

